wehub-resource-sync
92 lines
2.4 KiB
C#
92 lines
2.4 KiB
C#
using T3.Core.DataTypes.ShaderGraph;
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using T3.Core.Utils;
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namespace Lib.field.generate.sdf;
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[Guid("883e01f5-44ee-4724-9e6e-f885255c17e5")]
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internal sealed class PlaneSDF : Instance<PlaneSDF>
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, ITransformable
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, IGraphNodeOp
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{
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[Output(Guid = "82527072-beb2-492f-b737-faf9ed454e3f")]
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public readonly Slot<ShaderGraphNode> Result = new();
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// ITransformable interface implementation (Gizmo support)
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IInputSlot ITransformable.TranslationInput => Center;
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IInputSlot ITransformable.RotationInput => null;
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IInputSlot ITransformable.ScaleInput => null;
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public Action<Instance, EvaluationContext> TransformCallback { get; set; }
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public PlaneSDF()
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{
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ShaderNode = new ShaderGraphNode(this);
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Result.Value = ShaderNode;
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Result.UpdateAction += Update;
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}
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private void Update(EvaluationContext context)
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{
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TransformCallback?.Invoke(this, context); // Needed for Gizmo support
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ShaderNode.Update(context);
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var axis = Axis.GetEnumValue<AxisTypes>(context);
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var templateChanged = axis != _axis;
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if (!templateChanged)
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return;
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_axis = axis;
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ShaderNode.FlagCodeChanged();
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}
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public ShaderGraphNode ShaderNode { get; }
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public void GetPreShaderCode(CodeAssembleContext c, int inputIndex)
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{
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var a = _axisCodes0[(int)_axis];
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var sign = _axisSigns[(int)_axis];
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c.AppendCall($"f{c}.w = {sign}(p{c}.{a} - {ShaderNode}Center.{a});");
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c.AppendCall($"f{c}.xyz = p.w < 0.5 ? p{c}.xyz : 1;"); // save local space
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}
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private readonly string[] _axisCodes0 =
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[
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"x",
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"y",
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"z",
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"x",
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"y",
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"z",
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];
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private readonly string[] _axisSigns =
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[
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"",
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"",
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"",
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"-",
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"-",
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"-",
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];
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private AxisTypes _axis;
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private enum AxisTypes
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{
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X,
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Y,
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Z,
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NegX,
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NegY,
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NegZ,
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}
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[GraphParam]
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[Input(Guid = "76D4C422-399A-4B68-B0EA-5D2D2F54A667")]
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public readonly InputSlot<Vector3> Center = new();
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[Input(Guid = "99FCA01A-E0A6-49DC-9535-EBDE0F5F8744", MappedType = typeof(AxisTypes))]
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public readonly InputSlot<int> Axis = new();
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} |